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KMID : 1059519940380070480
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Journal of the Korean Chemical Society
1994 Volume.38 No. 7 p.480 ~ p.484
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Experimental Studies of Wrinkle Formation in the UV Cured Coating Around Film-Substrate Insterface
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Haon J.-W.
Lee H.-W,
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Abstract
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The durability of UV radiation cured coatings near the film-substrate interface has been studied. Particularly, the influence of the reactive diluent and oligomer in the UV-cured urethane acrylate formulation on the wrinkle formation of coating films was investigated. Results showed that wrinkle resistance increases when DMTA loss peaks of coating network are broad and has shoulder. When modified aromatic urethane acrylate oligomer is used to replace the aliphatic one, resulting cured network provides coating film of high hardness and flexibility. Therefore, the high values of loss modulus as low temperature are considered to be the main reason for wrinkle resistance improvements. The SEM and instron data support above conclusion.
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KEYWORD
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